Scientific Astrology Engine

Professional Astrology Tools for Modern Practice

Calculate natal charts and track planetary hours with high-precision astronomical data. Free, beautiful, and accurate tools for astrologers worldwide.

Calculate Birth ChartView Planetary Hours
Professional Tools

Your Astrological Toolkit

Precision instruments powered by high-fidelity ephemeris calculations

Birth Chart Calculator

Your Complete Natal Chart Analysis

Generate comprehensive birth charts with precise planetary positions, house placements, and aspect patterns. Professional-grade calculations using scientific-grade astronomical algorithms.

  • Astronomical Precision
  • Multiple House Systems
  • Detailed Aspect Analysis
  • Beautiful Visualizations
Calculate Your Chart

Astrocartography Map

Where in the World Are You Meant to Be?

Project your birth chart onto a world map. See all 40 planetary lines — where each planet is strongest for you — with detailed interpretations and relocated chart data on hover.

  • 40 Planetary Lines
  • Interactive Hover Tooltip
  • Relocated ASC & MC
  • Crossing & Paran Detection
Generate My Map

Synastry Chart Calculator

Relationship Compatibility

Compare two birth charts to reveal relationship chemistry, cross-aspects, and deep compatibility. Features a beautiful bi-wheel chart and 3-tier premium analysis.

  • Bi-Wheel Chart Visualization
  • Chemistry & Growth Analysis
  • Detailed Cross-Aspects
  • Element & Modality Balance
Check Compatibility

Planetary Hours

Track Auspicious Timing

Discover the planetary hours for over 100 cities worldwide. Our interactive ChronoDial visualization shows you the perfect timing for your activities.

  • 100+ Cities Worldwide
  • Interactive ChronoDial
  • Live Updates
  • Historical & Future Dates
Explore Hours

Explore by Category

Dive deeper into specific areas of astrology with our specialized hubs.

Relationship Astrology

Compatibility, chemistry & love

1 tool (+ 2 coming soon)

Predictive & Timing

Retrogrades, hours & calendars

18 tools

Natal Placements

Deep chart points & patterns

9 tools
Example Charts

Explore Documented Birth Charts

Analyze birth charts of well-known individuals with verified birth data

NM

Narendra Modi

Prime Minister of India

♍
Sun
Virgo
♏
Moon
Scorpio
♏
Rising
Scorpio
Born September 17, 1950 • Vadnagar, Gujarat, India

Mercury rules the chart — precision in communication and strategy

Politics
EM

Elon Musk

CEO of Tesla & SpaceX

♋
Sun
Cancer
♍
Moon
Virgo
♋
Rising
Cancer
Born June 28, 1971 • Pretoria, South Africa

Mars in Aquarius — innovation-driven action toward future goals

Tech & Innovation
SJ

Steve Jobs

Co-founder of Apple

♓
Sun
Pisces
♈
Moon
Aries
♍
Rising
Virgo
Born February 24, 1955 • San Francisco, California, USA

Pisces Sun, Virgo rising — visionary with obsessive attention to detail

Tech & Innovation
VP

Vladimir Putin

President of Russia

♎
Sun
Libra
♊
Moon
Gemini
♏
Rising
Scorpio
Born October 7, 1952 • Saint Petersburg, Russia

Saturn exalted in Libra — disciplined diplomacy and strategic patience

Politics
Browse All Charts
Initializing Observatory...
Common Questions

Frequently Asked

All planetary positions are calculated using precise astronomical data, providing sub-second accuracy for celestial positions. The calculations account for proper timezone handling and geographic coordinates.
The default house system is Placidus, which is the most commonly used system in Western astrology. You can also switch to Equal House or Whole Sign systems in your chart results.
Accuracy depends on the precision of your birth time input. The Ascendant (rising sign) changes approximately every 2 hours, and house cusps shift more frequently. For the most accurate chart, use your exact birth time from official records.
Yes. Birth chart calculations, planetary positions, and planetary hours are available at no cost. The tools are designed for both learning and practical astrological work.